Huawei DBS3900 Installation Manual page 60

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RRU3249

Installation Guide

Figure 7-20 Installing an RRU alarm cable

Install the waterproof DB15 male connector on the RRU alarm cable with caution, preventing the pin assignment

from being damaged.

Step 3 Use an M3 Phillips screwdriver to tighten the posts on both sides of the waterproof DB15 male

connector to 0.4 N·m (3.54 lbf·in.).

Step 4 Connect the eight cord end terminals at the other end to external alarm devices.

Use insulating adhesive tapes to wrap cord end terminals that are not in use and fix them at a proper position

based on the onsite situations. This prevents false alarm reporting and equipment damage due to contact of

exposed cables.

Figure 7-21 Method for handling cord end terminals that are not in use

Issue DraftA (2015-05-30)

NOTE

Figure 7-21

shows the method for handling cord end terminals not in use.

Huawei Proprietary and Confidential

7 Installing RRU Cables

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